remove agenix and migrate secrets to clan vars

squash this

secrets/freshrss.age

@@ -1,7 +1,7 @@
 age-encryption.org/v1
--> ssh-ed25519 JzHbnw jpMQTBWxbVVfpRmNC4lyDKCcrpz01Qx7LbkmSnieyHA
-RWh0M0kj8BGn3u7e1A2Tki1soeMUQCHk5xTXyBF5dRA
--> ssh-ed25519 8TpKTA qAvhyZSeKUYdZMhwPxd/eh4FNg1DAM1F2Stc6zvmV2A
-pEP1XxQZaC/acpjMpX0NN/Hnq3vZzfeHYlNUt2bwNzY
---- F/XBgHsBJAJIlfuT0DA4DcAS+3Ci8PI6XIkKbndI898
-<EFBFBD>n	s…$<24>}<7D><>IĘg<C498><67><EFBFBD>ᐺK<E190BA>,<2C><><EFBFBD><EFBFBD>\c)<29><>4$0<>dyio/<05>^g{dɼ̅B
+-> ssh-ed25519 JzHbnw JQOFdZFRMy3CUajSKR2pbUXw06LEGJoUCilV3QrlhAg
+nc9+a/wm+oTESW/f91UIBHyodXYpAwkp7iiBARsQqs8
+-> ssh-ed25519 8TpKTA bSzgxGzN9/cdSlb1PH3fYDa2bRSJC0vE6z1i5Me6wR4
+OqQXlelajxJNZ5RC7ooBvoUc03g5RELGQSX8BwEm428
+--- 68+PLIpazLNfF1NVo9dMFBiUrEIinXhYUufOiF+5Ic0
+<EFBFBD>oB<EFBFBD><EFBFBD><1F><16>i
<1D><1A>=<3D>&<26><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>o<EFBFBD>e.<2E><08><><EFBFBD>N<EFBFBD>`"<22>r=<3D><>:+nI}<1A><>c<EFBFBD>9y